One of the main items on my long list of winter boat projects is refinishing my boat trailer. The current color of the trailer is maroon (not a huge fan of that color) and it is fading, etc. in many areas. I would like my trailer to be black (match my truck and boat is all white) so I am considering spraying bedliner on it.

I have applied the bedliner from home depot in spray can form to a chrome bumper over a year ago and to this day it has not chipped. I slightly roughed up the chrome with sandpaper and applied a few coats of self etching primer first. My main questions are can I apply the self etching primer directly to the boat trailer or would a different primer be recommended (It's a Dorsey trailer, believe it is powder coated but could be wrong?). Also, if anyone has experience dealing with this please share!